Glass-grinding machine.



E. A. mfom. GLASS GRINDINGNACHINE,

APPLICATION FILED NOV.24.'19l5.

Patented Deo, 25, 1917 ATTURNEY Amss GRINDINGMACHINE., APPLICATION FILED NOV- 24. 1915.

1,251,115. Patented 1360.251917.

, v 3 SHEETS-SHEET 2.

ATTOHWEK E. A. RYON.

Y GLASS GRINDING MACHINE.

APPLICATION FILED NOV- 24,1915. 1,251,115. Patented Dec. 25,1917.

3 SHEETS-SHEET 3.

, '/NI/ TOR VM UNTTED sTATEs PATENT oEEioE.

EDWARD A. RYON, 0F WELLSBORO, PENNSYLVANIA, ASSIGNOR TO WELLSBORO GLASS COMPANY, 0F WILMINGTON, DELAWARE, A CORPORATION 0F 'DELAW'ARE.`

GLASS-GRINDING- .MACHINE Specification of Letters Patent.

rammed Dee. 25, 1917.

Application filed November 24, 1915. Serial No. 63,200.

To all whom it may concern:

Be it known that I, EDWARD A. RYON, a

.citizen of the United States of America,

and' a resident of I'Vellsboro, Tioga county, and State of Pennsylvania, have invented certain new and useful Improvements 1n Glass-Grinding Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relates 'to machines for grinding glass tumblers, bowls and the like, for the vpurpose of decorating them t0 enhance their beauty and increase their value.

In my copending application Serial No. 859,768 I have shown and Adescribed a machine of thev saine character in general, as. that to which my present invention pertains.

One object of my present invention is t0` and effective means for adjusting the height.

of .the grinding wheel for the purpose of adapting the machine to glass articles of varying sizes.

Another object is to provide such anal?- rangement of parts as to make the action of the machine positive and accurate, with a view to increasing the speed at which the machine may be operated and enlarging its capacity.

Other objects and advantages of my invention will be set forth hereinafter, and in order that my invention may be thoroughly understood I will now proceed to describe the same in the following specification and then point out the novel features thereof in appended claims.

Referring to the drawings: y

Figure 1 is a sectional elevation, in a llongitudinal plane, of a machine embody- Fig. 2 is an end elevation of the same machine, with certain of the parts broken away.

Figs. 3 and 4; are transverse sectional elevations taken respectively on the lines 3-3 and 4 4 of Fig. 1.

The feed mechanism is shown more in detail, in Fig. 5, which is a partial plan view of the central part of the machine, drawn to a. larger scale.

Fig. 6 'shows a detail view, drawn to a larger scale, of the mechanism for turninoP on its axis the carrier or holder on Whici the glass is mounted.

Fig. 7 is an enlarged detail view of the mechanism for turning the carriage which supports the holder, about the main spindle of the machine as an axis.

Fig. 8 illustrates, on a glass or tumbler, a simple design which may be readily produced by the machine of the previous fig ures.

Referring to Figs. l to 7 inclusive, the

machine here shown comprises a base or frame 10 which is adapted to be mounted on a bench` or other suitable supporting surface 11, a bearing yoke or head-stock 1 2, a carrier 13, a holder 11 mounted on the carrier, and a grinding Ywheel 15.

, Base or frame. The basel() is preferably a fiat casting having a slightly elevated flat surface 16v Grinding wheel.

The grinding wheel is supported in suitable bearings 22 provided in the bracket 18 and this bracket is mounted on the base 10 in such a way that it can be adjusted vertically to raise and lower the grinding Wheel. This adjustment may be effected in any suitable manner ;-for example, Wedge blocks 23 and 24 may be mounted in a recess 25 in the base and adjusted by one or more adjusting screws QG. cach of the screws being eut with left and right-hand threads near its respective ends to engage .tapped holes in the wedge blocks in :r well-known manner.

Head-.Swede The head-stock has the general torni ol a yoke with afterward spindle bearing 27 and a rear spindle bearing bracket or post. 2) supports the bearing 2i' and a bracket il() siipportstlie bearing 28, in;` arranged lo 1interconneet the brackets and tie the structure together. The rear bracket lj() in addition to the bearing QS, 'is torined to provide a sleevel 32 in which a hollow*driving shaft 5132-3 is mounted.

.\ tliimble ill 'is mounted to rotate in the'l vthe thinible il and vsplined to it by a ll'oodrull key 89. Some other suitable means :for causing tlieshatt and tliimble to turn together, without interteringwith the longitudinal movement of the shatt,A may be employed.

The thimble '3l has a stud projection 40 which extends rearwardly beyond the bearing and carries a notched wheel 4l and a gear wheel 42. -Both of these wheels are keyed to the stud projection and are held in positionl by a nut 43.

A latch 4l ispivotally mounted at 4:5 on the bracket and is adapted to 'engage one ot' the notches' 46 ot' the notched wheel hrl1.

The latch is pressed into engageiiieni'i with the periphery ot' the wheel by a spring 47. Keyed to the driving shat't 33 is a mutilated gear li which is arrai'iged to mesh with the gear wlieel l2. 'A releasing p awl Ylf) extends laterally ltrom the mutilated gear ldand is arranged to engage a pi-..jection au ot the latch ll. the arrangement ot parts being` such that t'or each revolution ot the gear l? the latch -l-l is released by the pawl lll in opposition to thespring i7. The iiotelied Wheel 4l and the thimble and 'spindle are thus rendered lree to rotate.

Mounted on the shaft 33 adjacent to the n'iulilaied gear'slS', is a driving slieave 5lv which may be connected by a belt 52 to a motor or other suitable driving means (not shown). 'llie slieave 5l is free to rotate on the shalt 2&3 except when a clutch ring iS sel. l'his accomplished by a bell crank lever 54 pivotedat which is connected to side' webs 31 bethe ring by a. rod JG extending through the hollow Vshaft 38. ltacl'i oll the positions to which the bell crank lever 5st may be adi usted, is accen iated by a spring 57, having a plurality or' depressions to engage a tooth 58 ot' the lever and hold it in place until it is'lforcibly mei/'ed to another position.

At. the opposite end of the bearing 32 from the mutilated gear 48 and the sheave 5l, are a pair of mutilated gears 59 and 60. The gear 59 cooperates with a gear Wheel G1 on a cam 62. The gear 60 meshes with a pinion or idler 63 which is mounted on a Stud 64; allixed to the bracket 30. The idler meshes ivith av gear wheel 65 which is also secured to the ca1n62.

The arrangement of gears 59,'C), 61, 63 and G5 is such thatthe lcam 64 is driven through a predetermined. arc iirst in one direction and then in the other, the gears 59 and 61 serving to drive it in one direction and the gears 60 and G5 which are connected by the idler (S3 serving to turn it in the opposite direction.

(jam.

The cam G2 is rotatively mounted on the spindle 35 and is spaced from a collar 66 block. This thrust block is held against rotation by a stationary key or spline 7l iiiouited on webs 71a, but is free to slidel longitudinally on the spindle. It has a second section 72, the-two sections having cooperating jaws aL and 72 and being interconnected by two pair of toggle links 73 (see Figs. l and The block section 72 is spaced from the4 enlargement 37 in the spindle by a'frictionless bearing 74 and the -arrangement of parts is 'such that when the links 7 3 are set a rotation of the cam 62, puslies the spindle forward in opposition to the spring 38.

The toggle links are connected by a yoke 75 and a Iturn buckle link 7G to a lever 7T. This .lever is T-sliaped and is pivoted at T8, the turn buckle being pivotally connected io the. bottom of the Tv as 'shown in Fig. 1A One arm of the T is adapted to engage an .adjustable stop 75l when the toggle AlinksI T15 are slightly overset. The opposite ai-ni ol the T is pressed outwardly by a spring` SO which must be momentarily compressed .iii breakingthe toggle. 'lhis spring tends to hold the T-shaped lever against'the stop TS) :ind prevents the accidental breaking ot the toggle, while it does not in any Way interfere with the automatic breaking ot' the toggle but rather tends to facilitate this action, as hereinafter explained.

One end ot' the U-shaped lever 20 is connected to -the'T-shaped lever 77 between the turn buckle and the stationary pivot 78.

This U-shaped lever is pivotally mounted at 81 on the bracket 19 and has an extension or feeler 82 which is adapted to beengaged Carrier.

The carrier comprises an angle bracket 85 which is secured to the end of the spindle 35 and provides a spherical bearing 86 for a llattened sphere 87 in'which a hollow shaft 88 of the holder is mounted. The arrangement of parts is such thatthe center line of the hollou' shaft 88 is substant-ially perpendicular to the center line of the spindle 35. The hollow shaft extends materially above thel bearing 86 and is counterbored to provide a cylinder 89 as clearly shown in Fig. 1. A pair of disk supports 90 and 91 are mounted on the lipllow shaft 88 and have Washers or gaskets 92 which are adapted to engage the inner surfaces and seal the opening of a glass or tumbler when it is mounted on the holder as indicated in Fig. 1. Operating in the cylinder 89 is a piston or plunger 93 which is connected'by a rod 94 to a lever 95. This lever is pivoted at 96 on the bracket 85 and is adapted to be actuated by a bell crank lever 97 to which it is connected by a link 98. The bell crank lever-97 is pivoted at 99 on an extension 100 of the bracket 85 and is in a convenient position to be set by the hand of the operator. It is adapted to be so actuated as to impart an inward movement to the piston or plunger 93 in the cylinder 89, thereby creating a partial vacuum in the chamber of the glass or tumbler which is closed by the supporting disks. -Thus eX- ternal air pressure serves to hold the glass or tumbler in position.'

Mounted on the hollow shaft 88 below the bearing 86 is a notched wheel 101 Which is adapted to be engaged by av latch 102. A spring 103 presses the latch 102 into engagement with the periphery of the wheel which is notched to receive it.

Adjacent to the notched wheel 101 on the hollow shaft 88 is a' bevel gear 104 which meshes with a gear 105 on a counter-shaft 106. This countershaft is supported in bearings 107 in the bracket 85 and has secured to it near its opposite end. a gear wheel 108.

A stationary gear segment 1.10 is secured to the head-stock l2 by a bolt 111 and has a pawl 112. lVhen the spindle rotated the carrier 13 is swung about the spindle as an axis thereby producing a certain rotative movement of the hollow shaft 88 by reason of the engagement ot' the gear wheel 108 with a stationary gear member 110. Furthermore, a projection 113 of the latch 102 is adapted to be engaged by the pawl 112 Which is arranged to release the latch 102 from the notch in the Wheel 101 With Which it is'in engagement. The arrangement of parts is such thatI the notched Wheel 101 which holds the sha-ft 88 in position, is released just before the gear Wheel 108 engages the lstationary gear segment 110. Thus, a turning movement ot' the countershaft 106 and of the shaft 88v is permitted.

Operation.

The operation of the machine is as follows z-Assuming that the glass or tumbler is mounted in place and that the parts of the machine occupy substantially the positions shown in Fig. 1,.-if the clutch lever 54 is set, motion will be transmitted from the driving sheave 51 to the mutilated gears 48, 59 and 60. The first action of the gear Wheels 59 and 60 is to produce a rotative over-and-back or an oscillatory movement of the cam 62. This movement forces the block section 7 O`aWay from the cam, the motion being transmitted through the toggle links 73 to the block section 72 and then to the spindle 35 which is forced. longitudinally and carries the glass against the grinding Wheel.

Wheel reaches a predetermined depth at which the finger 82 engages the surface of the glass adjacent to the Wheel. As soon as the glass presses against the linger the lever 20 is rocked whichin turn causes an oscillation of the lever 77. Thisoscillation is in opposition to the spring 8U and pushes upwardly on the turn buckle link 76, breaking the toggle joints formed between the links 73. The spring 38 instantly retracts the spindle 35.

In this Way one cut, such as the cut 120, Fig. 8, is produced. This action occurs in a very short space of time so that the backward oscillation of the cam 62 does not occur until after the spindle has been retracted by the spring 38. Hence the toggles 73 are reset by the spring 80 pressing on the lever 77 as soon as this is permitted by the return of the cam to the position shown in Fig. 1.

The next action is the tripping of the latch 44 by the paWl 49 of the gear 48.

This latch, which has engaged one of the notches of thewheel 41 and has held the" spindle against rotation, is now released, and the spindle is free to be turned by the teeth of the mutilated gear 48 which now engage the teeth of the gear Wheel 42'. The

'arrangement of parts is such that the spinis advanced t make another cut before. This action continues until finally just as the spindle completesl a revolution all of the cuts `of a single figure having been made, the pawl 113 engages the stationary pawl 112and releases the latch 102. imnediately thereafter, the gear wheel 108 comes into engagement with the stationary gear segment 110 and is turned through a predetermined angle suicient to move the hollow shaft 88 through an angle, say, of 450, depending upon the spacing, about the circumference of the tumbler, of the several 'figures of the design. I

The latch 102 falls into the next notch of the wheel 101 and locks the holder in in'g 87 is provided for the purpose'of -permitting 'the ready manipulation of the holder,'it being only necessary to release tlie binding screws which clamp the sphere in order to swing the holder as desired.

It is obvious that the design may be very materially' changed by varying the number of cuts in each figure and byvarying the spacing of the `iigures. Thess variations may beeflected by gear changingfor eX- ample, changing the notcliing of the wheels l 4:1 and 101, the mutilated gears being 'adapted accordingly.

lStructural variations may be 'effectedwithin the spirit and scope of my invention,

and I intend that only such limitations be imposed as are indicated in claims.

What I claim is:

1. A glass grinding machine comprising a spindle, a carrier affixed thereto, a grindthe appended l ing wheel, and a cam mounted on the spina spindle having va collar or enlargement,

a carrier secured to the spindle, an actuating dle and co-axial therewith, and means for oscillating the cam to advance the spindle and the carrier.

2. A glass grinding machine comprising a rotatable spindle, a carrier secured thereto, a grinding wheel, and a cam rotatively 4mounted on the spindle and adapted to produce a longitudinal movement thereof, and two sets of gears adapted to produce'an oscillatory movement ofthe cam.

3. A glass grinding machine comprising block slidably mounted on the spindle adjacent to said collar or enlargement and a cam rotatively mounted on the spindle 'dacent to the actuating block and adapted to coperate therewith, and means for pi'oducing an oscillatory movement of the cam.

1. A glass grinding machine comprising a spindle having a collar or enlargement, a carrier secured to the spindle, an actuating block slidably mounted on the spindle adjacent to said collar or enlargement, and a cam 4rotatively mounted on the spindle adjacent to the actuating block and adapted to cooperate therwith, and two sets of mutilated ,gears for` producing an oscillatory movement of the cam.

Y 5. A glass grinding machine comprising a spindle having a collar, a bearing inthe spindle near one end, a thrust surface adapted to engage the, bearing, a spring interposed between the bearing and'the collar tending to hold the thrust surface against the bearing, a carriersecured to the spindle, an actuating block comprising two sections, and toggle links interconnecting the sections, a cam rotatively mounted on the spindle and coperating with the actuating block, and

means for oscillating the cam uto advance the spindle, said toggle links beingadapted to have their joints broken to permit the retraction of the spindle.

. 6. A glass grinding machine comprising a spindle, means for limiting the longitudinal movement ofthe spindle in onedirection, a

spring tending to hold the spindle against said limiting means, a collar, an actuating block adjacent to the collar composed of two sections, and toggle links connecting the sections, and a cam mounted on the spindle and adapted to coperate, with the actuating block, mutilated gears adapted to oscillate the cam, and means tending to hold the toggle links in a: set position, whereby the oscillatory movement of the cam produces a longitudinal movement of the spindle inv opposition to the spring.

' 7 A glass grinding machine comprising a Spindle, means for limiting the longitudinal movement ofthe spindle in one direction, a spring tending to hold the spindle against said limiting means, a collar, an actuating block adjacent to the collar composed of two sections, and toggle 'links connecting` the sections, an annular cam mounted on the spindle and adapted to coperat'e with the actuating block, mutilated gears adapted to oscllate the cam, means tending to hold the togglelinks in a set position, whereby the oscillatory movement of the cam produces a longitudinal movement of the spindle in opposition to the spring, a grinding wheel, and

incansadapted to be tripped by the work whenthe cutv has reached a predetermined depth, for breaking the joint between the toggle links.

S. A holder for glass grinding machines comprising a tubular support having a restricted opening at one end, disks mounted on the support and having washers or gaskets adapted to fit into the opening in the glass, a. plunger mounted in the tubular support and having a rod extending through the restricted' opening, `and means for adjusting the position of the plunger to create a partial vacuum within the glass.

9. Aholder comprising a bracket, a spherical socket, a spherical iearingmember adjustably clamped in said socket, and a supporting member rotatively mounted in said spherical bearing.

10. A holder for glass grinding machines comprising means for partitioning -off a chamber in the glass, and means for creating a partial vacuum in the chamber.

11. A holder for glass grinding machines comprising a relatively Stationary-support having a washer or gasket adapted to enter and close off a chamber in the glass, and means for creating a partial vacuum in the chamber.

12. A holder for glass grinding machines comprising a relatively stationary support having a Washer or gasket adapted to enter and close oli' a chamber in the glass, and a plunger and cylinder embodied in the'stationary support for creating a partial vacuum in the chamber.

13. .A glass grinding machine comprising a bearing bracket or head-stock, a spindle, a carrier secured to the spindle, an edge grinding wheel, in the vertical plane of the axis, and means for vertically adjusting the grinding wheel.

14. A glass grinding machine comprising a bearing bracket or head-stock, a spindle, a carrier secured to the spindle, a grinding whel, a driving shaft, a driving sheave, a clutch for operatively connecting the sheave to the shaft, mutilated gears for connecting the driving shaft to the spindle, and means dependent upon the driving shaft for producing the longitudinal movement of the spindle.

l5. A glass grinding machine comprising a bearing bracket or head-stock, a spindle, a carrier secured to the spindle, a grinding wheel, a driving sha-Et, a driving sheave, a clutch operatively connecting the sheave to the shaft, mutilated gears for connecting the driving shaft to thc spindle, an oscillatory cam on the spindle adapted to produce a longitudinal movement thereof, and mutilated gears for connecting the driving shaft to the cam.

16. A glass grinding machine comprising a bearing bracket or head-stock, a spindle, .a carrie-r secured to the spindle, a cutting wheel, a driving shaft, a driving shcave, a clutch operatively connecting the sheavc to the shaft, mutilated gears for connecting the driving shaft to the spindle. an oscillatory camv on the spindle adapted to produce a longitudinal movement thereof, and two sets of mutilated gears between the driving shaft and the cam for producing an oscillatory movement thereof.

17. A glass grinding machine comprisingV a carrier, a spindle, an actuating block mounted on the spindle having two sections, and toggle links connecting the4 sections, a yoke connected to the toggle joints formed by the links, a lever connected to the yoke, an adjustable stop for limiting the movement of the lever in one direction to hold the toggle links in alset position, a spring tending to push the lever against the stop', and a lev-er adapted to be tripped by the work for actuating the lever to trip the toggle links. l

18. A glass grinding machine comprising an edge grinding wheel,a Work holder movable substantially in the pla-ne of the wheel, and means for adjusting the grinding wheel in the same plane at right angles to the direction of the work holder movement.

19. A glass grinding machine comprising a grinding wheel, a movable work holder, a Wedge block, and an adjusting screw for varying the positions of the blocks to determine the elevation of the grinding wheel.

20. A glass grinding machine comprising a base, a grinding wheel, a supporting bracket or head-stock mounted on the base having a pair of spaced bearings, a thimble rotatively mounted in one of the bearings, a. spindle rotatively mounted in the 'other bearing and extending into the thimble, and means for connecting the .spindle to the thimble to permit an independent longitudinal movement of the spindle; vand a carrier secured to the spindle. i

21. A glass grinding machine comprising a base, a grinding wheel, a supporting bracket or head-stock mounted on the base having a pair of spaced bearings, a thimble rotatively mounted in one .of the bearings, a

spindle rotatively mounted in the other bearing and extending into the thimble, means for connecting the spindle to the thimble to permit an independent longitudinal movemen-t of the spindle, and means for moving the spindle longitudinally to advance the Work against the grinding wheel.

22. A glass grinding machine comprising a base,v a grinding wheel, a sup-porting bracket or head-stock mounted on the base having a pair of spaced bearings, a thimble rotatively mounted in one of the bearings, a spindle rotatively mounted in the other bearing and extending into the thimble, means for connecting the spindle` to the thimble to permit an independent longitudinal movement of the spindle, a carrier secured to the spindle at one end adjacent to the grinding' wheel. means mounted on the spindle between the bearings for moving the' spindle longitudinally, a notched disk secured to the thimble, a latch cooperating with the notched disk for holding the thimble and spindle against rotation, and means for releasing thelatch and eii-ecting a rotative movement of thethimble and spindle.

23. A glass grinding machine comprising av base, a grinding Wheel, a supporting bracket or head-stock mounted on the base having a pair of spaced bearings, a thimble rotatively mounted in one of the bearings, a spindle rotatively mounted in the other bearing and extending into the thimble, means for connecting the spindle to the thimble to permit an independent longitudinal movement of the spindle, a carrier a base, a grinding Wheel, a supporting bracket or head-stock mounted on the base,

having a pair of spaced bearings, a thimble rotatively inountedin one of the bearings, a spindle rotatively mounted in the other bearing and extending into the thimble, means for connecting the spindle to the .thimble yto permit an independent longitudinal movement of the spindle, a carrier secured ,to the spindle at one end adjacent to the grinding Wheel, an actuating block comprising two sections mounted on the spindle and toggle links interconnecting the sections, `means for preventing the rotation `of the actuating block, a cam rotatively i mounted on the spindle and cooperating with the actuating block to produce longitudinal movementof the spindle, means for oscillating the cam to advance the spindle, and means dependent' upon the Work for breaking the toggle link joints.

25,. ,A lass grinding n'iaehiney comprising a base, a grinding Wheel, a supporting bracket or head-stock mounted on the base and having a pair of spaced bearings, a thimble rotatively mounted in one of the bearings, a spindle rotatively mounted in the other bearing and extending into the thimble, a spline for' preventing the relative rotation between the spindle and thimble Withf out interfering with the longitudinal movement of the spindle, aI carrier secured to the spindle at one end, a spring tending to move the spindle toward the thimble, an actuating block composed of tivo sections mounted on the spindle and connected by two pairs of `tof'ggle links, a cam mounted on the spindle and adapted to coperate with the block in producing a longitudinal movement of the spindle in opposition to the spring, and means dependent upon the Work for breaking the toggle link joints tolpermit the retraction of the spindle independently ,of the cam.

Q6. A. glass grinding machine comprising a base, a grinding wheel, a supporting bracket or head-stock mounted on the base and having a pair of spzced bearings, a thimble rotatively mounted in one of the bearings, a spindle rotatively mounted in the other bearing and extending into the thimble, a spline for preventing the relative rotation between the spindle .and thiinble without interfering with the longitudinal movement ot the spindle, a carrier secured to the spindle at one end, a spring tending to move the spindle toward the thimble, an actuating block composed of two sections mounted on the spindle and connected by two pairs ot' toggle links, a cam mounted on the spindle and adapted to coperate with the block in producing a longitudinal movement of the spindle in opposition to the spring, a yoke interconnecting the toggle links, a lever connected to the yoke, an adjustable stop for limiting the movement of the lever to hold the toggle links in a set position, a spring tending to push the lever against the stop, and means dependent upon the Work t'or actuating the lever in opposition to the spring to break the toggle link joints; and means dependent upon the Work for breaking the toggle link joints to permit the re traction of the spindle independently oi Lhe cam.

27. A glass grinding machine `comprising Va base, a grinding Wheel, a supporting bracket or head-stock mounted on the base and having a pair of spaced bearings, a thimble rotatively mounted in one of the bearings, a spindle rotatively mounted in the 1 other bearing and extending into the thimble, a spline for preventing the relative rotation between the spindle and thimble Without interfering with the longitudinal movement of theV spindle, a carrier secured to the spindle at one end, a spring tending to move the spindle toward the thimble, an actuating block composed of tivo sections mounted on the spindle and connected by two pairs of toggle links, a cam mounted on the spindle and adaptedfto coperate with the block in 'producing a longitudinal movement of the spindle in opposition to tlie'spring, a yoke interconnecting the toggle links, a lever connected to the yoke, an adjustable stop for limiting the movement of the lever to hold the toggle links in a set l'iosition, a spring tending to push the lever against the stop, means dependent upon the work for actuat- .ing the lever in opposition to the spring to break the toggle. link joints, and a lever pi.

otally connected to the first-named lever and having an arm extending adjacent to the grinding surface ofthe wheel and adapted to be actuated by the work when a cut of a redetermined depth has been made, to

reak the toggle link joints and permit the quick retraction of the spindle and carrier independently of the cam.

28. yA glass grinding machine comprising ing the spindle at one limit of its motion, an

actuating block mounted on the spindle adjacent to the collar or enlargement, an oscillatory cam mounted on the spindle adjacent to the actuating block, said block comprising two sections and two pairs of toggle links connecting the sections, a driving shaft, mutilated gears for connecting the driving shaft to the thimble and two sets of mutilated gears for connecting the driving shaft to the cam for producing an oscillatory movement or the cam, and a step by step rotative movement of the thimble.

29. A glass grinding machine comprising a' base, a grinding wheel, a supporting bracket or head-stock mounted lon the base and having a .pair of spaced bearings, a spindle rotatively mounted in one of the head-stock bearings, a carrier secured to the spindle, a thirnble rotatively mounted in the other head-stock bearing, a shoulder on the 'spindle adjacent' to the head-stock bearing for limiting the longitudinal movement 'of the spindle in one direction, a collar or enlargement at the opposite end of the bearing, a spring interposed between the bear- .ing and said collar or enlargement for holding the spindle at one limit of its motion, an actuating block mounted on the spindle adjacent toA the collar or enlargement, an

- oscillatory cam mounted on the spindle ad-y jacent lto the actuating block, said block comprising two sections and two pairs of` toggle links 'connecting the sections, a driving shaft, mutilated' gears for connecting the driving shaft to the thimble and two sets of mutilated gears for connecting the driving shaft to the cam for producing an oscillatory movement of the cam,and a step by step rotative movement of the thimble, said thimble being connected to .said

spiridle by a spline to permit the longitudinal movement of the spindle While preventing rotative movement of the thimble yrelative to the spindle, a notched wheel secured to the thimble, a latch adapted to engage the notched wheel, and a pawl mounted on one of said gears for releasing the, latch 'to permit a step by step movement ofl `the thimble.

30. A glass grinding machine comprising a. base, a grinding wheel, a supporting bracket yor head-stock mounted on the base and having a pair of spaced bearin s, a spindle rotatively mour'ited in one o the head-stock bearings, a carrier secured to the spindle, a thiinble rotative-ly mounted in the other head-stock bearings, a shoulder on the spindle adjacent to the head-stock bearing for limiting the longitudinal movement of the spindle in` one direction, a coll-ar or en-l largement at the4 opposite end of the bearing, a spring interposed between the bearing and said collar or enlargement for holding the spindle at one limit of its motion, an actuating block mounted on the spindle vadjacent to the collar or enlargement, an

oscillatory cam mounted on the spindle adjacent to the actuating block, said block comprising two sections and two pairs of toggle links connecting the sections, a driving shaft, mutilated gears for connecting the driving shaft to .the thimble and tivo sets of mutilated gears for connecting thedriving shaftjto the cam for producing an oscillatory movement of the cam, `and a step. by step rotative movement of the thimble, said thimble being yconnected to said spindle by a spline to permit the longitudinal movement of thespindle while preventing rotative movement of the thimble relative to the spindle, a notched wheelV secured to the thimble, 'a latch adapted to engagev the notched wheel, a pawl mounted on one of said gears for releasing the latch to permit a step by step movement of the thimble, acarrier secured to the spindle, a work holder mounted on the carrier, and a stopV lever iio adapted to engage the work when it has advanced to produce a cut of a `predetermined depth, for breaking the toggle joints and permitting thespindle and carrier to be re tracted independently of the cam. j

31. A glass grinding machine comprising a spindle, means for limiting the longitudinal movement of the spindle inA one direction, a spring. tending to hold the spindley against said limiting means, a collar, an actuating block adjacent to the collar composed of tivo sections and toggle links connecting these sections, means for actuating the connected sections to produce a longitudinal movement of the spindle in opposi tion to the spring, and means adapted to be tripped by the Work when the cut has,

reached a predetermined `length for breaki ing wheel,

a spindle, means for limiting the longitudinalv movement of the spindle in one direction, a. spring tending to hold the spindle against said limiting means, a collar, an actuating block adjacent to the collar com! posed of two sections and toggle links connecting these sections, a cam adapted to cooperate with the actuating block, means tending to hold the toggle links in a set position wheneby the cam is adapted to produce a longitudinal i'novement of the spindle in opposition to the spring, and means adapted to be tripped by the work for breaking the joints between the toggle.

links.

33. A glass grindinomachine comprising a spindle, a carrier aiied thereto, a grinda rotary cani coaxial with the spindle, and means 'for oscillating the cam to advance the spindle and the carrier.

3L. A glass grinding machine comprising a spindle, a carrier secured to the spindle, an

actuating block, a driving shaft, a rotary moving the carrier toward the tool, means for retracting the carmen-collapsible means interposed'between the actuator and the carrier, and means for tripping the collapsible means. y

37. A glass decorating machine comprising a work carrier, a tool, anactuator for mowing the carrier toward the tool, yielding means for retracting the carrier, and collapsible means for permitting the retraction of the carrier independently of the actuator.

38. A glass decorating machine comprising a work carrier, a tool, an actuator for moving the carrier toward the tool, yielding means for retracting the carrier, collapsible means interposed betweenthe actuator and the carrier, and meansI Jfor tripping the collapsible means to permit the independent retraction of the carrier.

39. A glass decorating machine eomprislng a work carrier, a tool, an actuator for moving the carrier toward the tool, yielding means for retracting the carrier, and a quick return mechanism for the carrier dependent upon the depth of the cut.

40. A glass decorating machine. comprising a work carrier, a` grinder, an actuator for moving the carrier toward the grinder, means 'for retracting the carrier, collapsible meansinterposed between the actuator and the carrier, and means dependent upon the depth of the'eut for tripping the collapsible means.

4l. A glass decorating machine comprising awork carrier, a grinder, an actuator for moving the carrier toward the'grinder, means for retracting the carrier, collapsible means interposed between the aetuator'and the carrier, a finger adjacent to the cutter adapted to be engaged by the work and trip the collapsible means at a predetermined depth of cut.

42.' A glass decorating machine comprising a work carrier, a grinder, an actuator for moving the carrier toward the grinder, a spring for retracting the carrier, and collapsible means for permitting the retraction of thecarrier independently of the actuator.

43. A glass decorating machine comprising a work carrier, a grinder, an actuator' for moving .the carrier toward the grinder, a spring for retracting the carrier, collapsible means interposed between the actuator. and the carrier, and means Eer tripping the collapsible means to permit the independent retraction of the carrier.

44. A glass decorating machinecomprising a work carrier, a grinder, an actuator for moving the carrier toward the grinder, a spring for retracting the carrier,toggle links interposed between the actuator and the carrier, and means dependent upon the depth of the cut for tripping-the toggle to permit the retraction of the carrier independent of the actuator.

45." A glass decorating machine comprismg a work carrier, a grinder, an actuator yfor moving the carrier toward the grinder, a spring t'or Vretracting the carrier, toggle links interposed between the actuatorl and the carrier, a pivoted 'linger `close to the cutter adapted to be engaged by the work at a predetermined depth of cut, and links connecting the lingerto the toggle links vwhereby the toggle links are tripped and the carrier is retracted. y f f In witness whereof, I have hereunto set my hand this 27 day or October, 1915. A v EDWARD A.- RYON.

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